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Now showing items 1 - 6 of 6

  • Capturing Tacit Knowledge in Security Operation Centres

    Cho, Selina Y.   Happa, Jassim   Creese, Sadie  

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  • Hearing Attacks in Network Data: an Effectiveness Study

    Axon, Louise   Happa, Jassim   Goldsmith, Michael   Creese, Sadie  

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  • On properties of cyberattacks and their nuances

    Happa, Jassim   Goldsmith, Michael  

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  • Cultural Heritage Predictive Rendering

    Happa, Jassim   Bashford-Rogers, Tom   Wilkie, Alexander   Artusi, Alessandro   Debattista, Kurt   Chalmers, Alan  

    High-fidelity rendering can be used to investigate Cultural Heritage (CH) sites in a scientifically rigorous manner. However, a high degree of realism in the reconstruction of a CH site can be misleading insofar as it can be seen to imply a high degree of certainty about the displayed scenewhich is frequently not the case, especially when investigating the past. So far, little effort has gone into adapting and formulating a Predictive Rendering pipeline for CH research applications. In this paper, we first discuss the goals and the workflow of CH reconstructions in general, as well as those of traditional Predictive Rendering. Based on this, we then propose a research framework for CH research, which we refer to as Cultural Heritage Predictive Rendering (CHPR). This is an extension to Predictive Rendering that introduces a temporal component and addresses uncertainty that is important for the scenes historical interpretation. To demonstrate these concepts, two example case studies are detailed.
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  • Illuminating the past: state of the art

    Happa, Jassim   Mudge, Mark   Debattista, Kurt   Artusi, Alessandro   Goncalves, Alexandrino   Chalmers, Alan  

    Virtual reconstruction and representation of historical environments and objects have been of research interest for nearly two decades. Physically based and historically accurate illumination allows archaeologists and historians to authentically visualise a past environment to deduce new knowledge. This report reviews the current state of illuminating cultural heritage sites and objects using computer graphics for scientific, preservation and research purposes. We present the most noteworthy and up-to-date examples of reconstructions employing appropriate illumination models in object and image space, and in the visual perception domain. Finally, we also discuss the difficulties in rendering, documentation, validation and identify probable research challenges for the future. The report is aimed for researchers new to cultural heritage reconstruction who wish to learn about methods to illuminate the past.
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  • [ACM Press the 6th International Conference - Pretoria, South Africa (2009.02.04-2009.02.06)] Proceedings of the 6th International Conference on Computer Graphics, Virtual Reality, Visualisation and Interaction in Africa - AFRIGRAPH \"09 - Virtual relighting of a Roman statue head from Herculaneum

    Happa, Jassim   Williams, Mark   Turley, Glen   Earl, Graeme   Dubla, Piotr   Beale, Gareth   Gibbons, Greg   Debattista, Kurt   Chalmers, Alan  

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